Mitsubishi Electric PUHZ-W50VHA Service Manual page 70

Outdoor controller circuit board
PUHZ-HW112YHA2R3(-BS)
PUHZ-HW112YHA2R4(-BS)
SW1
Manual defrost, detect
history record reset
SW7
Function switch
(HW·HA2 only)
SW6
Model select
SW5
Function switch
SW8
Function switch
LEV-A,B,C
Linear expansion
valve
TH34
Thermistor
<Comp. surface>
63L
Low pressure switch
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/
Plate Hex liquid>
TH32
Thermistor
<Inlet water>
TH33
Thermistor
<Suction>
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1 (+)- (−))
7 4
V
SP
(Voltage between pins
of C5A, C5B):
0 V DC (when stopped),
1–6.5 V DC
CNF1, CNF2
(when operated)
Connect to the fan motor
1–4: 280–380 V DC
5–4: 15 V DC
6–4: 0–6.5 V DC
7–4: 15 V DC (When stopped)
7.5 V DC (When operated)
(0–15 V pulse)
OCH439M
PUHZ-HW140VHA2R3(-BS)
PUHZ-HW140VHA2R4(-BS)
SW9 SW2
Function switch Operation monitor
function
CNDC
280–380 V DC (1+, 3−)
(Outdoor power circuit
board for HW140V)
(Noise filter circuit board
for HW112, 140Y)
70
<CAUTION> TEST POINT 1 is high voltage.
PUHZ-HW140YHA2R3(-BS)
PUHZ-HW140YHA2R4(-BS)
CNDM
1–2:
Input of low-level
sound priority mode
CN52C
Connect to the power
circuit board (CN52C)
(HW140V)
CN4
Transmission to out-
door power circuit
board (CN4)
SV1
Connection for option
(Drain hose heater output)
21S4
4-way valve
63H
High pressure
switch
CN2
Connect to the outdoor
power circuit board (CN2)
1–5: Reception from
2–5: Zero cross signal
3–4: Not used
6–5: 16 V DC
7–5: 16 V DC
CNAC
2–4:
Power supply for outdoor
controller circuit board
(230 V AC)
1–3:
Power supply for indoor
and outdoor unit connec-
tion wire
(230 V AC)
CNS
S1–S2: 230 V AC
power circuit board
(0–5 V DC)
(HW112, 140Y)
18 V DC
(HW140V)